Fix backend configuration example

[gmcbrien]

Change description

NetApp Google Cloud NetApp Volumes backend configuration options and examples refer to the use of storagePools whereas the code example here refers to storagePool.

I assume that this should be an array, which works in my configuration.

I was alerted to this as I could see this field was being ignored in my configuration (which was based on the example provided here).

⚠️ There may be other references that may need adapted. I can only vouch for the GCNV TridentBackendConfig

Project tracking

Do any added TODOs have an issue in the backlog?

Did you add unit tests? Why not?

Does this code need functional testing?

Is a code review walkthrough needed? why or why not?

Should additional test coverage be executed in addition to pre-merge?

Does this code need a note in the changelog?

Does this code require documentation changes?

Additional Information

Ref: Issue 1099

[torirevilla]

Have you completed the CCLA?

[gmcbrien]

Have you completed the CCLA?

No. I'm personally happy to sign anything that needs signed, but will not go hunting in my company for a 'signatory' - that simply will not work. Please advise how to proceed.